:Product: 0425RSGA.txt
:Issued: 2010 Apr 25 2201 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 115 Issued at 2200Z on 25 Apr 2010
IA.  Analysis of Solar Active Regions and Activity from  24/2100Z
to 25/2100Z:  Solar activity was very low.  No flares were observed
during the last 24 hours and the disk remained spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
very low for the next three days (26-28 April).
IIA.  Geophysical Activity Summary 24/2100Z to 25/2100Z:
The geomagnetic field was quiet during the last 24 hours.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be mostly quiet for day 1 (26 April) and quiet to
unsettled with isolated active periods for day 2 (27 April) due to
the arrival of a weak CME observed on 22 April and a recurrent
coronal hole high speed stream expected to rotate into a
geoeffective position.  Quiet to unsettled conditions are expected
for day three (28 April) as the coronal hole high speed stream is
expected to persist.
III.  Event Probabilities 26 Apr-28 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           25 Apr 075
Predicted   26 Apr-28 Apr  076/076/076
90 Day Mean        25 Apr 081
V.  Geomagnetic A Indices
Observed Afr/Ap 24 Apr  008/008
Estimated Afr/Ap 25 Apr  003/005
Predicted Afr/Ap 26 Apr-28 Apr  007/008-010/012-007/005
VI.  Geomagnetic Activity Probabilities 26 Apr-28 Apr
A.  Middle Latitudes
Active                15/35/15
Minor storm           05/15/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                20/40/20
Minor storm           10/15/10
Major-severe storm    01/01/01